基于高速公路收费数据的路网运行状态评价

Road Network Mobility Performance Evaluation Based on Freeway Toll Data

探讨利用高速公路收费数据作为数据资源进行路网运行状态评价的可行性,并完整分析了相关算法。选取某实际运营的高速公路网2008—2010年间7～10月的收费数据作为基础,重点介绍数据的分析处理过程,包括进行数据准备,执行各类数据质量控制规则、资料库配置及构建样本输出模型等,深入挖掘高速公路网运行存在的出行时间分布及周期分布等潜在规律,计算和提取了平均速度、出行延误、行驶时间指数、计划行驶时间指数、拥堵持续时间等几类路网运行状态评价的核心指标,并指出了采用高速公路收费数据作为数据资源开展此类研究的优缺点。分析表明,收费数据可应用于高速公路网运营绩效的评估,并可为交通出行提供参考信息。

The feasibility of evaluating mobility performance of freeway network by the data of toll collection system as data resource was discussed, and the related algorithm was completely analysed. Based on the toll dataset of an operational freeway network from July to October during 2008 - 2010, the data analysis and processing procedure, including data preparation, data quality control rules, database configurations and modeling of sample outputs, was introduced. The potential regularities of the freeway network about travel time distribution and cycle distribution were found out. Some key indexes of performance measurement including average speed, travel delay, travel time index, planned travel time index, congestion duration were calculated and extracted. The advantages and disadvantages of the methodology were pointed out. The analysis shows that it is feasible to evaluate the mobility performance of freeway network by toll datasets, and the outputs could be the valuable travel information of the freeway network.